Transmission-tower.



PATENTED DEC. 3, 1907.

D. R. SCHOLES. TRANSMISSION TOWER. APPLICATION FILED APR.13,1907.

.[-E. 64 (amt:-

PATENTED DEC. 3, 1907.

D. R. SOHOLES. TRANSMISSION TOWER.

APPLICATION FILED APR.13,1907,

3 SHEETSSHEEYT 2 NO. 872,758 PATENTED DEC. s, 1907.

' n. R, SGHOLBS.

TRANSMISSION TOWER.

APPLIOATIOH FILED APR.18,1907.

3 SHEETS-SHEET 3.

- 5 22 .111-"? fiz /Mt; fiifc fm Mao UNITED STiVlE-S PATlTEi f oiuu cn.

TRANSMISSION-TOVVER.

Applh ation filed April 13. 19(17.

To all (e/mm it may eon; rm:

Be it known that l. DANIEL R. Senorrs. a citizen ol' the United States. res ding at (hicago, in the county of (ook and State ol lllinois, have invented certain new and nselul Improvements in 'lransmission-'lowers. of which the following is a specification.

The invention relates to strm-tural-iron towers which are adapted for supporting electric transmission wires or cables, but which may be used for other purposes.

One object of theinvention is to improve the. construction of such towers with a view to better adapting them for supporting elec trio transmission wires and forbetter resisn ing the stresses that are peculiar to such use, and another object of the invention is toimrove theconstruction of the rigging by which the transmission wires are carried with a View to obtaining a maximum of strength I and rigidity from the material used.

The invention consists in the features of novelty that are hereinafter described.

In the accompanyingdrawings which are made. a part of this specification; Figures 1 and 2 are respectively, a front and a side elevation of the upper portion of a tower enibodying the invention. Figs. 3, l and 5 are horizontal sections thereol on the lines 3-3, 44, and 55 respectively. Fig. 1 lookin downward.

Ihroughout this s ecification the term longitudinal is use to indicate the direction in which the tower is viewed in Fig. 1, and similar terms indicating direction or location are referable thereto, unless otherwise indicated or apparent.

The tower proper comprises four corner posts, A,-A, A-, A preferably made of angle iron, suitable braces, B, etc. such as are customarily used, or of any other desired constructiim and arrangement, connecting them -at intermediate points, and suitable means lines that they occupy the four corners of a arallelogram elongated laterally, more or ess, according to the altitude at which they are considered. This is due to variations in the angles of their convergence, considered in different directions. Considered transversely (Fig. 2) the four posts lie wholly in Patented Dec :3, 1997'.

' lwo transverse planes which ronYei bottom lo lop at an angle oi about in een degrees to each other. (onsulered lon =;itu:li nally Lbe l'our posts b partly in two ion tud'i'hal planes which onverge upward at angle of about six clec'rees and prrlly two longitudinal plat which coni' z ward at any angle o'i l'orlx' grees loeach other, thus l'oruii:

1 the top ol the tower. To a all of the posts are bent ira 1.

this being the point at which peak begins. V

The wide lateral spread I t the base ol the peak thus produced llords sullie' elea1kiance through the tower longitud for l the passage ol' one of the transnii. '1\'ires,-

j the insulator pin for which i hown at l).

it would not be possible to (a this wire through the tower'ii the posts cozinu gcd an; alt

planes as shown in Fig. 2, because it is necesat a saie distance from any part of the tower structure. and this distance would not be atl'orded by the arrangement shown in F1; Q

The You er braces 13 used a t the level or the pin 1), (and, elsewlwre, if desired) a re so shaped and arranged that tl'ujnot only perlOl'lll the functions ol compression members for bracing the tower but. in addition. 'iorm a cross arm which ail'ords the ehiri lateral supsocket din. which the pin 1) fits and the loo their ends to the four posts of the towe that the pin is braced in all horizontal du' tions. The socket for the pinpass'cs down ward through the plate 1 and its lower end is secured to andsupnortcd by the tow rbraces B through the medium of a cross arm b To the upper portiono'f the peak of the tower is secured a horizontal cross-arm l5 which carries at each end an insulator pin .l) for the attachment of a transmission wire. The cross-arm is of truss-form and is made of two angle irons the intermediate portions of which are parallel and secured to the outside of the tower posts and tho outer portions of from bottom to top in two long'itudina-l diverging branches of the brace are united 1 l'.

sary for the transmission wire to be placed I M I I plates e. v

Each of the outer ends of the cross-arm is which converge and are I secured together by braced by a pair of braces F, the upper ends of which are secured to the cross-arm whence they diverge downward, and have ir lower ends secured to the ostsv of thetower. The

braces of eachpair ie in a' substantially ver tical longitudinal,'. lane, and substantially in the direct line-of t e stresses produced by the transmission wire, and this is made possible by the wide lateraldivergence of the posts of the tower at the base of the peak. This wide ilateral divergence of the sides of the peak also results in shortening the projecting portions of the cross arms, or, in other words, bringing the po'nts of connection between the cross arm an the tower closer to the ends of the cross-arm. This in effect, shortens the arm or leverjthroug which the stresses of the transmission wire are transmitted to the tower and at theaiine time gives a wider base of attachment between'uthe cross-arm and the tower. These are all factors in increasing the strength and rigidity of the peak of the tower'and ries. v -V 7 Each of the insulator pins Df occupies a tubular socket (if which asses through an opening in the plate e and has it s lowerend attached to a cross plate f attached to the braces F. 1

of the rigging; which it car- What I claim' as' new and desire to secure by Letters Patent, is:

1. A tower having four posts converging at their upper portions to form a peak,

braces in the form of the letter X connecting. the posts at the base of the peak andrneans supported by the braces for carrying a transmission wire. a

2. A tower havingfourosts converging at their upper portions to orm a peak, the

I angle of convergence of said posts at the peak being greaterlongitudinally than transversely, braces connecting the posts at the base; of the peak, and means carried. by the 1 braces for supporting the transmission wire. '3. A tower having four osts beni'iilie-ar their upper ends so that t eir upper and lower portions form angles with each other and so that their upper portions converge to form a peak, a cross arm secured 'to the peak and having projecting ends and a pair of braces for each end of the cross arm, the

ing parallel intermediate portionssecured to the peak and converging outertnor tions projectlng beyondthe peak and ayp mpf braces secured to the. cross arm whence they diverge downward and have their lower ends secured to the tower. I

v5. A tower having four posts, the upper portions of which converge to form apeak,

having its intermediate portion secured to jecting beyond thev peak and a. pair of braces foreach projecting end of the cross arm, the braces of each pairlying in a subthey diverge downward and have their lower endssecured to the-tower posts.

"the: angle dFconver enee in the.o ther' direction, a cross arm 0 trusfs formatlon having tions projecting beyond said 'convergin posts and a; pair of braces for ealchprojecring endofi the cross arm, the'bracesofeach cross arm whence t and have their lower ends secured to the tower;

braces havin ward, toward each other, and means for-connecting their central ppr'tions together, their diverging branches tower posts.

,8. A tower havin four corner posts, and a braces having their central portions bent in the tower posts. I I

9. A tower having four corner,po'sts and a ward,toward eachother, and a plate secured to and connecting their central portions,

towerosts, the late'havin an o enin througliit for the gurpose des ibed. g

DANIEL R. SOHO. ES;

Witnesses:

L. C.- WALKER,

J. FLANIGAN.

for each projecting end andcross jurin, thebraces of each pair having their upper endsbraces connecting said posts, a cross arm the peak and having outer portions pro- 61' A tower having four posts converging from bottom-to top in two transverse planes and also converging their upper portionsv in two longitudinal planes, the angleof convergencein one directik," being greater than its intermediate portion securedeto: the con? verging posts and having converging poreing secured to the combined brace and cross-arm made of two' braces having the1r central portions bentmtheir diverging branches being secured to the cross arm being of truss formation and havstantially vertical plane, and having their upper.v ends secured tothe'cross' ar'in whence pair having their upper ends secured to the ey diverge downward combined" brace an cross-arm made oftwo.

ward, toward each other,'anda plate"secured to and connecting their central portions, their diverging branches being secured to 7. tower havin four corner posts and a combined brace an cross-arm made of two their central portions bent in: f 

